One of the odder tropes of current conservative discourse related to the possibility of constraining the excesses of the Trump administration is blaming (who else?) Democrats for eliminating institutional checks available to the minority party, like the filibuster. What's weird about this is that if conservatives actually believe that such constraints are important parts of our system of checks and balances, they're absolutely free to restore them. Nobody's stopping them. But the idea that Republicans will self-regulate is seen as transparently absurd by all parties -- Republicans included.
Yet there's an even more fundamental absurdity: the implication that were it not for Democrats changing the rule-in-question sometime in the past eight years, the rule would be there to constrain Republicans. The problem being that, even when Democrats didn't change a rule protecting the minority party, Republicans haven't even blinked before casting them aside the minute they interfered with their partisan agenda. We already saw this with filibusters on Supreme Court nominees (Democrats abolished the filibuster for lower-court nominees, but not SCOTUS). And now GOP Senator Tom Cotton (R-AR) is proposing that the Senate eliminate the "blue slip" rule, which allows Senators to block judicial nominations in their home states. Democrats had kept that rule despite its use by GOP Senators to obstruct Democratic judicial nominations in the Obama administration. But -- surprise, surprise -- it turns out that whether Democrats keep or change a minority-protective rule has absolutely no bearing on whether Republicans want to keep it.